CN1022906C - Non-deformable magnesite cement - Google Patents
Non-deformable magnesite cement Download PDFInfo
- Publication number
- CN1022906C CN1022906C CN 91106377 CN91106377A CN1022906C CN 1022906 C CN1022906 C CN 1022906C CN 91106377 CN91106377 CN 91106377 CN 91106377 A CN91106377 A CN 91106377A CN 1022906 C CN1022906 C CN 1022906C
- Authority
- CN
- China
- Prior art keywords
- magnesite
- cement
- magnesia
- powder
- carbonate powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B9/00—Magnesium cements or similar cements
- C04B9/02—Magnesium cements containing chlorides, e.g. Sorel cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to magnesite cement which comprises magnesite and magnesium chloride solution. The magnesite cement has the technical key points that carbonate powder used for preventing a magnesite cement product from deformation is added into the ingredients, the addition quantity of the carbonate powder accounts for 33 to 67 % of the weight of the magnesite, and the carbonate powder is limestone powder, dolomite powder or magnesite powder. Furthermore, the fineness of the carbonate powder is from 16 to 170 meshes.
Description
The present invention relates to a kind of magnesia cement.
Magnesia cement is also referred to as Suo Lieer (Sorel) cement.It is low that its goods have heat conductivity; Good heat insulating; Attrition resistance is good; The bonding various types of organic and mineral filler early strength height of energy; Has elasticity; Energy insect protected post; In light weight; Many advantages such as erosion of anti-butter, lubricating oil and paint.Can be in industry, commerce and family as flooring material or other finishing material.But one of disadvantage that this cement is main is: volume stability is bad, in use is out of shape warpage, crackle gradually, develops into gradually and can not use.In order to address the above problem, U.S. Pat discloses a kind of method that prevents the distortion of magnesium oxychloride cement floor tile for No. 333035.The main technical points of this method is: the floor tile of producing is polished in mould, though the magnesium cement floor tile of producing has in this way overcome the shortcoming of distortion, complex manufacturing technology wastes time and energy to the floor tile polishing of the not demoulding.
The objective of the invention is in order to overcome above-mentioned deficiency, and a kind of non-deformable magnesite cement that can prevent the magnesia cement product deformation that provides.
The present invention realizes like this.It comprises magnesia, the magnesium chloride solution of forming traditional magnesia cement composition, and its technical essential is: added the carbonate powder that prevents the effect of magnesia cement product deformation in above-mentioned composition.Magnesia used in the present invention is to be formed through traditional technology roasting by giobertite; Magnesium chloride solution is the aqueous solution of magnesium chloride, and its proportion is 1.18～1.23g/cm
3, the carbonate powder that is added is a kind of in limestone powder ground dolomite and the magnesite stone flour or their mixture, the add-on of its carbonate powder is preferably 33～67% of magnesia weight.If the add-on of carbonate powder is less than 33% of magnesia amount, then can not reach the purpose that prevents this magnesia cement product deformation preferably.If the add-on of carbonate powder, then can cause the intensity of this magnesia cement goods greater than 67% of the magnesia amount and reduce and increase the moisture absorption disadvantage of its goods.The fineness that this magnesia cement goods add carbonate powder is 16～170 orders.
Owing to added carbonate powder in this magnesia cement, make carbonate powder in the magnesia cement goods, become basis and nucleus of crystal that hardening thing generates, the particle surface and the critical hardening component on every side that are carbonate powder produce surface reaction, thereby have increased the density and the non-deformability of this magnesia cement goods.Can find that by pore structure analysis the pore structure that adds this magnesia cement goods of carbonate powder is improved, and helps preventing the distortion of its goods to this magnesia cement goods.Moreover, little as long as the add-on of carbonate powder does not exceed the scope of requirement in this magnesia cement goods to the loss of strength of goods, can reach service requirements fully, test of many times has all proved this point.
Embodiment:
According to the magnesia cement of tabulate down 1 preparation A, two kinds of compositions of B, the magnesia cement of A, two kinds of compositions of B is done each five of the test blocks of 305 * 305 * 16mm respectively.
Table 1
The magnesium chloride solution limestone powder of numbering magnesia proportion 1.23
A 1 0.6 0
B 1 0.8 0.54
The A composition does not contain the limestone powder that prevents its product deformation in dividing as can be seen from Table 1.Contain the limestone powder that prevents its product deformation in the B group.The test block of A, two kinds of compositions of B is made and maintenance according to traditional technology.Maintenance demoulding after 24 hours, in 15～25 ℃ environment, wrap up in the damp fortnight of guarantor after the demoulding with the plastics sheet, and then through the airing of week age, to form test block that branch makes by A, B two at last all puts its single face is made moist, measure the warpage rate of a test block every day, and on sponge, increase the moisture that loses simultaneously, with every group of results averaged of measuring, this mean value is inserted table 2 again.
Warpage rate (the unit: mm/M) table 2 that the test block single face makes moist
Time sky 123579 10
Numbering
A 4.53 5.54 5.65 8.35 10.67 - 10.35
B 0.39 0.34 0.30 - 0.37 0.38 0.49
Data from table 2 as can be seen, the warpage rate that adds the B group magnesia cement test block of limestone powder is far smaller than the A group magnesia cement test block that does not add limestone powder.Because this test block is to test under very moist environment, it can be said that this magnesia cement goods of bright adding limestone powder, even under very disadvantageous condition, still have non-deformability well.In test of long duration, also confirmed this point.
According to said ratio, if change limestone powder into ground dolomite or magnesite stone flour or both or three's mixture wherein, through the aforesaid method test, its effect is basic identical.
Claims (2)
1, a kind of non-sex change magnesia cement of forming by magnesia, magnesium chloride solution, it is characterized in that: contain carbonate powder in this magnesia cement, said carbonate powder is wherein a kind of in limestone powder, ground dolomite and the magnesite stone flour or their mixture, and its content is 33～67% of magnesia amount (weight meter).
2, non-deformable magnesite cement according to claim 1 is characterized in that: the fineness of the limestone powder that contains in this magnesia cement, ground dolomite and magnesite stone flour is 16～170 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106377 CN1022906C (en) | 1991-04-11 | 1991-04-11 | Non-deformable magnesite cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106377 CN1022906C (en) | 1991-04-11 | 1991-04-11 | Non-deformable magnesite cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1054237A CN1054237A (en) | 1991-09-04 |
| CN1022906C true CN1022906C (en) | 1993-12-01 |
Family
ID=4907799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106377 Expired - Fee Related CN1022906C (en) | 1991-04-11 | 1991-04-11 | Non-deformable magnesite cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022906C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9093332B2 (en) | 2011-02-08 | 2015-07-28 | Taiwan Semiconductor Manufacturing Company, Ltd. | Elongated bump structure for semiconductor devices |
-
1991
- 1991-04-11 CN CN 91106377 patent/CN1022906C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1054237A (en) | 1991-09-04 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |